CVE-2026-106289: Missing authorization in Google Chrome
Description
A missing authorization vulnerability in the FedCM component of Google Chrome prior to version 155.0.8059.39 allows a remote attacker to bypass the web origin policy using a crafted HTML page. This vulnerability has been assigned CVE-2026-106289 and is rated with medium severity by Chromium security. The issue was addressed in Chrome version 155.0.8059.39.
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-106289 is a vulnerability in Google Chrome's FedCM implementation where missing authorization checks allowed a remote attacker to bypass the web origin policy via a crafted HTML page. This flaw affects Chrome versions before 155.0.8059.39 and was fixed in that version. The web origin policy is a critical security mechanism that isolates web content from different origins to prevent unauthorized data access. The vulnerability was publicly disclosed and patched by Google.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to bypass the web origin policy, potentially enabling unauthorized access to web content or data that should be isolated by origin boundaries. The Chromium security team has rated this issue as medium severity, indicating a moderate impact on confidentiality and security.
Mitigation Recommendations
Users and administrators should update Google Chrome to version 155.0.8059.39 or later, where this vulnerability has been fixed. The vendor advisory confirms that an official fix is available. No additional mitigation steps are required once the update is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-10-06T16:34:23.612Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html","vendor":"Google"}]
Threat ID: 6ac546482cdf04f656d49da8
Added to database: 10/06/2026, 19:04:40 UTC
Last enriched: 10/06/2026, 21:49:03 UTC
Last updated: 10/06/2026, 21:49:03 UTC
Views: 1
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